RemoveAudioCapturer  392 content/renderer/media/webrtc_audio_capturer.cc     audio_device_->RemoveAudioCapturer(this);
RemoveAudioCapturer  334 content/renderer/media/webrtc_audio_device_impl.h   void RemoveAudioCapturer(const scoped_refptr<WebRtcAudioCapturer>& capturer);